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gh-118761: Improve import time of annotationlib #132028

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DavidCEllis wants to merge 2 commits into from
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gh-118761: Improve import time of annotationlib #132028

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f78c6ec
split annotationlib into two
DavidCEllis Apr 2, 2025
10f35b2
Also defer functools import
DavidCEllis Apr 2, 2025
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Also defer functools import
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@DavidCEllis
DavidCEllis committed Apr 2, 2025
commit 10f35b274e437ad7de98e0963e8e0ed193b9d118
11 changes: 7 additions & 4 deletions Lib/annotationlib/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@

import builtins
import enum
import functools
import keyword
import sys
import types
Expand All @@ -23,12 +22,16 @@ class _LazyImporter:
def __getattr__(self, name):
if name == "ast":
import ast
setattr(self, "ast", ast)
self.ast = ast
return ast
elif name == "_Stringifier":
from ._stringifier import _Stringifier
setattr(self, "_Stringifier", _Stringifier)
self._Stringifier = _Stringifier
return _Stringifier
elif name == "functools":
import functools
self.functools = functools
return functools
else:
raise AttributeError(
f"{self.__class__.__name__!r} object has no attribute {name!r}"
Expand Down Expand Up @@ -588,7 +591,7 @@ def get_annotations(
if hasattr(unwrap, "__wrapped__"):
unwrap = unwrap.__wrapped__
continue
if isinstance(unwrap, functools.partial):
if isinstance(unwrap, _laz.functools.partial):
unwrap = unwrap.func
continue
break
Expand Down